The notation and audio tracks for the pieces in the grades handbooks are included in the book 'Graded Rock Guitar Songs: 8 Rock Classics for Intermediate Guitarists' (published by Hal Leonard).
Step 1

price: £8.50
Step 2

price: £8.95
Grade 1

price: £8.95
Grade 2

price: £8.95
Grade 3

price: £8.95
Grade 4

price: £8.95
Grade 5

price: £9.95
Grade 6

price: £9.95
Grade 7

price: £9.95
Grade 8

price: £9.95